``... the growth in consumer debt is raising concerns when viewed in the context of the existing wage stagnation hampering the current economic environment. The rating agency cites a paper published in October 2017 by the Harvard Business Review which stated that the inflation-adjusted hourly wage has grown by only 0.2% per year since the mid-1970s and labor's share of income has decreased to its current level of 57% from 65%. Meanwhile, in the second quarter of 2017, wages were only 5.7% higher than they were a decade earlier. In comparison, the Federal Reserve Bank of New York/Equifax data shows that consumer debt growth over the same period was 9.3%.''